귀금속을 포함하는 치과주조용 대용합금의 특성 -등원자비 AuCu합금의 규칙화와 시효경화 거동에 미치는 Pd첨가의 영향-
Characteristics of Alternative Dental Casting Alloys Containing Precious Metal -Effect of Palladium addition on the Atomic Ordering and AGE-Hardening Behavior of Equiatomic AuCu Alloy-
소속 상세정보
김형일
백석효신/태전도웅/중천아청
KMID : 0362219930200010059
Abstract
The effect of palladium addition up to 6at% to an equiatomic AuCu alloy on the atomic orderingand age-hardening behavior was studied by means of electirical resistivity measurements, X-ray diffraction and hardness test. The following results were
obtained.
1. All alloys in the AuCu-Pd pseudo-binary system examined in this study exhibited a single phase with AuCu I type ordered structure by the aging at 300℃, and the axial ratio(c/a) became larger than that of stoichiometric AuCu I ordered
lattice.
2. The order-disorder transition temperature(Tc) rose with increasing the palladium concentration.
3. With increasing the palladium concentration, age-hardening rate in the early stage of aging became slower and the onset of overaging delayed. This was attributed to the fact that ordering rate decreased with increasing the palladium
concentration.
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